Description: Wide Application: All bicycle types universal front fork fixed, Mountain / road bike are both applicable. Quality Material: Versatile Bikes Block is made of aluminum alloy material, solid, stable and durable. Screw Fixing Holes: fixed on the wooden board with screws, convenient for car/indoor parking, easy to use, quick to install, small and convenient. Bikes Block Fork Mount: Stable and safety enough to lock your bike on the rack without worrying about scratching your car. Versatile: Can be mounted in a garage, home, shed for storage, and mounted in a truck bed, van, or on a trailer for transporting. Specification: Material: Aluminum Alloy Size Chart: Front fork mount: 16.1cmx4cmx6.5cm/6.34inchx1.57inchx2.56inch Rear wheel mount:6.5cmx10cm/2.56inchx3.94inch Package Includes: 1 Set Bike Car Roof Mount Rack Note: Please allow slightly errors due to manual measurement and different monitors.